Large-compensation double-layer flexible joint

Abstract

The large-compensation double-layer flexible joint comprises a left pipe sleeve, a right pipe sleeve, a sleeve, an inner-layer clamp, a connecting piece and an outer-layer clamp, the inner-layer left pipe sleeve and the inner-layer right pipe sleeve are connected through a first sealing ring groove, a third sealing ring groove, a first sealing ring, a third sealing ring and the sleeve in a large-angle slope angle design, and large radial deflection can be conducted. The second sealing ring grooves, the fourth sealing ring grooves, the second sealing rings and the fourth sealing rings of the outer-layer left pipe sleeve and the outer-layer right pipe sleeve are in large-angle slope angle design, and large radial deflection can be conducted. And the left pipe sleeve and the right pipe sleeve can perform large-displacement axial movement after being arranged in the inner-layer hoop. The large-compensation high-sealing-performance expansion joint can meet the requirements of a modern aviation pipeline system for large compensation, high sealing performance and long-term stable use, achieves various large compensation capacities in a complex installation environment, and is high in practicability, capable of being disassembled and assembled quickly and high in efficiency.

Description

TECHNICAL FIELD

[0001] The utility model discloses a pipeline connecting piece field, specifically disclose a double-layer flexible joint connection of big compensation. BACKGROUND

[0002] In the new high temperature, high pressure, corrosive medium environment of aviation pipeline, the complex working condition environment of thermal expansion and cold shrinkage, strong vibration on the aircraft, a new type of big compensation double-layer flexible joint is needed to meet the actual demand.

[0003] At present, the traditional pipeline connection mode is generally used in China, such as flaring, threaded connection, etc. The traditional rigid joint cannot adapt to the displacement change of pipeline. In the face of complex working conditions, such as large temperature change, frequent pressure fluctuation, strong vibration, etc., stress concentration is easy to occur in the pipeline, which leads to pipeline damage. The big compensation double-layer flexible joint of the utility model can effectively compensate the displacement, reduce the stress, and improve the safety and reliability of the pipeline system.

[0004] In addition, the existing flexible joint has deficiencies in large displacement compensation capacity, sealing performance and stability. Some flexible joints are prone to sealing failure and excessive deformation under large displacement. The utility model overcomes these problems through unique double-layer flexible structure and advanced sealing design, and has better performance under complex working conditions. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the above problems, the utility model provides a big compensation double-layer flexible joint, which is welded with the duct at both ends, mainly including inner layer and outer layer, and can realize large angle compensation and large displacement compensation.

[0006] The utility model discloses a technical solution which comprises a left pipe sleeve, a right pipe sleeve, a sleeve, an inner layer clamp, a connecting piece and an outer layer clamp, one end of the left pipe sleeve is welded and connected with a catheter on the outside, and the other end is provided with a sealing ring groove one on the outside in the radial direction for placing a sealing ring one, the outer side of the middle part of the left pipe sleeve is further provided with a convex ring one, and the top end face of the convex ring one is provided with a sealing ring groove two in the radial direction for placing a sealing ring two, the left side of the convex ring is connected with the outer side wall of the left pipe sleeve away from one end of the sealing ring groove one in an arc transition mode, and the right side is provided with an arc groove one in the axial direction for transition connection, one end of the right pipe sleeve is welded and connected with the catheter on the outside, and the other end is provided with a sealing ring groove three on the outside in the radial direction for placing a sealing ring three, the outer side of the sealing ring one and the sealing ring three is sleeved with the sleeve, and the outer side of the sleeve is provided with the inner layer clamp for sealingly connecting the left pipe sleeve and the right pipe sleeve, the outer side of the middle part of the right pipe sleeve is provided with a T-shaped protrusion, the right side of the T-shaped protrusion is provided with an arc groove two in the axial direction for transition connection with the outer side wall of the right pipe sleeve away from one end of the sealing ring groove three, the left side of the T-shaped protrusion is provided with an arc groove three in the axial direction for transition connection with the outer side wall of the right pipe sleeve, the arc degree of the arc groove two is greater than that of the arc groove three, one end of the T-shaped protrusion is provided with a sealing ring groove four in the radial direction on the outside for placing a sealing ring four, the middle part of the T-shaped protrusion is provided with a convex ring two, the connecting piece is in a hollow structure, is placed on the outside of an inner layer sealing pair formed by the left pipe sleeve, the inner layer clamp and the right pipe sleeve, one end of the connecting piece is close to the opening of the right pipe sleeve, the other end is sealed and is provided with a through hole, the diameter of the through hole is greater than the diameter of the left end of the left pipe sleeve and is smaller than the maximum diameter of the convex ring one, the inner side is sealingly connected with the convex ring one and the sealing ring two, the outer side wall of one end of the connecting piece close to the right pipe sleeve is provided with a convex ring three, the inner side is sealingly connected with the sealing ring four, and the outer layer clamp is placed on the outside of the convex ring two and the convex ring three to sealingly connect the connecting piece and the right pipe sleeve.

[0007] Further, the left pipe sleeve, the right pipe sleeve, the sleeve, the inner layer clamp, the connecting piece and the outer layer clamp are all made of metal material. The sealing rings are all made of non-metal material.

[0008] Further, the inner layer left pipe sleeve and the right pipe sleeve are connected with the sleeve at the sealing ring groove one, the sealing ring groove three, the sealing ring one, the sealing ring three by large-angle slope design, so that the left pipe sleeve and the right pipe sleeve can be greatly radially deflected to provide large compensation capacity for the aviation pipeline system.

[0009] Further, the outer layer left pipe sleeve and the right pipe sleeve are connected with the sealing ring groove two, the sealing ring groove four, the sealing ring two and the sealing ring four by large-angle slope design, so that the left pipe sleeve and the right pipe sleeve can be greatly radially deflected to provide large compensation capacity for the aviation pipeline system.

[0010] Further, the left pipe sleeve and the right pipe sleeve can be axially moved with large displacement after being installed in the inner layer clamp, and are in clearance fit after the maximum step difference and the maximum displacement.

[0011] The product is formed by the left pipe sleeve, the right pipe sleeve, the sleeve and the sealing ring one and the sealing ring three, which form the inner layer sealing pair of the product to ensure the medium flow; the left pipe sleeve, the connecting piece, the right pipe sleeve and the sealing ring two and the sealing ring four form the outer layer sealing pair of the product to prevent the working medium from leaking into the machine body in the case of an internal layer emergency. The clamp is used as a structural part to fix and limit the axial and radial displacement and ensure the sealing of the product. In the case of meeting the maximum angle compensation and the maximum displacement at the same time, the left pipe sleeve and the right pipe sleeve are in clearance fit with the sleeve. The inner layer is used for medium conveying and can be used for large angle radial deflection compensation and large displacement axial expansion compensation; the outer layer can protect the internal structure and also has large angle radial deflection compensation and large displacement axial expansion compensation.

[0012] The utility model discloses the beneficial effects of:

[0013] The large-compensation double-layer flexible joint can meet the demand of the modern aviation pipeline system for large compensation, high sealing performance and long-term stable use, has high practicability, and can be quickly disassembled and assembled and has high efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings incorporated into the specification and forming a part thereof show, in accordance with the embodiments of the utility model, and together with the specification, serve to explain the principle of the utility model. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without the creative labor for the ordinary skilled in the art. In the drawings:

[0015] Figure 1 The structure schematic view of the large-compensation double-layer flexible joint is provided in the utility model;

[0016] In the drawings:

[0017] 1-left pipe sleeve, 11-sealing ring groove one, 12-convex ring one, 121-sealing ring groove two, 122-arc-shaped groove one, 2-right pipe sleeve, 21-sealing ring groove three, 22-T-shaped protrusion, 221-arc-shaped groove two, 222-arc-shaped groove three, 223-sealing ring groove four, 224-convex ring two

[0018] 3-sleeve

[0019] 4-inner layer clamp

[0020] 5-connecting piece, 51-through hole, 52-convex ring three

[0021] 6-outer layer clamp, 7-sealing ring one, 8-sealing ring two, 9-sealing ring three, 10-sealing ring four DETAILED DESCRIPTION

[0022] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example implementations to those skilled in the art.

[0023] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0025] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood through specific circumstances.

[0026] Please refer to Figure 1, the utility model provides a big compensation's double -layer flexible joint structure schematic diagram, including left pipe sleeve 1, right pipe sleeve 2, sleeve 3, inner layer clamp 4, connecting piece 5, outer layer clamp 6, left pipe sleeve 1 one end outside is welded with the connection of pipe, and the other end outside is radially provided with sealing ring groove one 11 and places sealing ring one 7, left pipe sleeve 1 middle outside is further provided with convex ring one 12, and the top end face of convex ring one 12 is radially provided with sealing ring groove two 121 and places sealing ring two 8, the left side of convex ring one 12 is connected with the outside wall arc transition connection of left pipe sleeve 1 far from sealing ring groove one 11 one end, and the right side is axially provided with arc slot one 122 transition connection, right pipe sleeve 2 one end outside is welded with the connection of pipe, and the other end outside is radially provided with sealing ring groove three 21 and places sealing ring three 9, the outside sleeve of sealing ring one 7 and sealing ring three 9 is provided with sleeve 3, and sleeve 3 outside is provided with inner layer clamp 4 and carries out inner layer sealing connection to left pipe sleeve 1 and right pipe sleeve 2, right pipe sleeve 2 middle outside is provided with T type convex 22, and the outside wall of T type convex 22 right side is axially provided with arc slot two 221 transition connection with right pipe sleeve 2 far from sealing ring groove three 21 one end, and the outside wall of T type convex 22 left side is axially provided with arc slot three 222 transition connection with right pipe sleeve 2, and the radian of arc slot two 221 is greater than the radian of arc slot three 222, and T type convex 22 is radially provided with sealing ring groove four 223 and places sealing ring four 10 with the outside of sealing ring groove three 222 one end, and T type convex 22 middle outside is provided with convex ring two 224, connecting piece 5 is hollow structure, places the outside of inner layer sealing pair that left pipe sleeve 1, inner layer clamp 4 and right pipe sleeve 2 are formed, and connecting piece 5 is close to right pipe sleeve 2 one end opening, and the other end is sealed and is provided with through -hole 51, and the diameter of through -hole 51 is greater than the diameter of left pipe sleeve 1 left end and is less than the maximum diameter of convex ring one 12, and the inside is sealed with convex ring one 12, sealing ring two 8 connects, and the outside wall of connecting piece 5 is close to right pipe sleeve 2 one end and is provided with convex ring three 52, and the inside is sealed with sealing ring four 10 and links, and outer layer clamp 6 is placed outside convex ring two 224 and convex ring three 52, and carries out outer layer sealing connection to connecting piece 5 and right pipe sleeve 2.

[0027] Left pipe sleeve 1, right pipe sleeve 2, sleeve 3, inner layer clamp 4, connecting piece 5, outer layer clamp 6 all adopt metal material quality.Sealing ring all adopts nonmetal material quality.

[0028] Inner layer left pipe sleeve 1 and right pipe sleeve 2 are connected by sealing ring groove one 11, sealing ring groove three 21 and sealing ring one 7, sealing ring three 9, sleeve 3, adopt large angle slope design, can carry out larger radial deflection.Outer layer left pipe sleeve 1 and right pipe sleeve 2's sealing ring groove two 121, sealing ring groove four 223 and sealing ring two 8, sealing ring four 10 connecting place adopt large angle slope design, can carry out larger radial deflection.The left pipe sleeve 1 and right pipe sleeve 2 can carry out large displacement axial movement after being loaded in inner layer clamp 4.Realize the multiple big compensation ability under the complex installation environment

[0029] The product is formed by the left pipe sleeve 1, the right pipe sleeve 2, the sleeve 3, the sealing ring one 7 and the sealing ring three 9, which form the inner sealing pair of the product, and ensure the medium flow; the left pipe sleeve 1, the connecting piece 5, the right pipe sleeve 2 and the sealing ring two 8 and the sealing ring four 10 form the outer sealing pair of the product, which prevents the working medium from leaking into the machine body in the case of the inner layer burst. The clamp is used as a structural part, which fixes and limits the axial and radial displacement, and ensures the sealing of the product, and facilitates the installation and disassembly, and improves the installation efficiency. In the case of meeting the maximum angle compensation and the maximum displacement at the same time, the left pipe sleeve and the right pipe sleeve are matched with the sleeve in the gap. The inner layer is used for medium conveying and can be used for large-angle radial deflection compensation and large-displacement axial expansion compensation; the outer layer can provide protection for the internal structure, and also has large-angle radial deflection compensation and large-displacement axial expansion compensation

[0030] The above examples are only used to illustrate the technical scheme of the utility model and not to limit it, and the modification or equivalent replacement of the technical scheme of the utility model by the ordinary skilled in the art, as long as it does not deviate from the spirit and scope of the technical scheme of the utility model, is covered in the claim range of the utility model.

Claims

1. A large-compensation double-layer flexible joint, characterized in that: The system includes a left sleeve (1), a right sleeve (2), a sleeve (3), an inner clamp (4), a connector (5), and an outer clamp (6). One end of the left sleeve (1) is welded to the outer side of the conduit, and the other end has a sealing ring groove (11) arranged radially to hold a sealing ring (7). The middle outer side of the left sleeve (1) also has a convex ring (12). The top end face of the convex ring (12) has a sealing ring groove (121) arranged radially to hold a sealing ring (8). The left side of the convex ring (12) is connected to the outer wall of the left sleeve (1) away from the sealing ring groove (11) by a circular arc transition. An arc-shaped groove (122) is provided along the axial direction of the right sleeve (2) for transition connection. One end of the right sleeve (2) is welded to the outer side of the conduit, and the other end is provided with a sealing ring groove (21) along the radial direction to place a sealing ring (9). A sleeve (3) is fitted on the outer side of the sealing ring (7) and the sealing ring (9). An inner clamp (4) is provided on the outer side of the sleeve (3) to form an inner sealing connection between the left sleeve (1) and the right sleeve (2). A T-shaped protrusion (22) is provided on the outer side of the middle part of the right sleeve (2). The right side of the T-shaped protrusion (22) is connected to the outer side wall of the right sleeve (2) away from the sealing ring groove (21) along the axial direction. An arc-shaped groove two (221) is provided for transition connection. An arc-shaped groove three (222) is provided along the axial direction on the left side of the T-shaped protrusion (22) and the outer wall of the right sleeve (2). The arc of the arc-shaped groove two (221) is greater than the arc of the arc-shaped groove three (222). A sealing ring groove four (223) is provided radially on the outer side of the T-shaped protrusion (22) near the arc-shaped groove three (222) to place the sealing ring four (10). A convex ring two (224) is provided on the outer side of the middle part of the T-shaped protrusion (22). The connecting piece (5) has a hollow structure and is placed in the inner sleeve (1), the inner clamp (4) and the right sleeve (2) of the inner sleeve. On the outside of the sealing pair, the connector (5) is open at one end near the right sleeve (2), and sealed at the other end with a through hole (51). The diameter of the through hole (51) is larger than the diameter of the left end of the left sleeve (1) and smaller than the maximum diameter of the first convex ring (12). The inner side is sealed and connected with the first convex ring (12) and the second sealing ring (8). The outer wall of the connector (5) near the right sleeve (2) is provided with the third convex ring (52), and the inner side is sealed and connected with the fourth sealing ring (10). The outer clamp (6) is placed outside the second convex ring (224) and the third convex ring (52) to form an outer sealing connection between the connector (5) and the right sleeve (2).

2. The large-compensation double-layer flexible joint according to claim 1, characterized in that: The left sleeve (1), right sleeve (2), sleeve (3), inner clamp (4), connector (5), and outer clamp (6) are all made of metal.

3. The large-compensation double-layer flexible joint according to claim 1, characterized in that: The inner left sleeve (1) and right sleeve (2) are connected by sealing ring groove 1 (11), sealing ring groove 3 (21) and sealing ring 1 (7), sealing ring 3 (9) and sleeve (3) with a large angle slope design, which can make a large radial deflection.

4. The large-compensation double-layer flexible joint according to claim 1, characterized in that: The sealing ring groove 2 (121), sealing ring groove 4 (223), sealing ring 2 (8), and sealing ring 4 (10) of the outer left sleeve (1) and right sleeve (2) adopt a large-angle slope design, which can make a large radial deflection.

5. The large-compensation double-layer flexible joint according to claim 1, characterized in that: The left sleeve (1) and right sleeve (2) can move axially with large displacement after being installed in the inner clamp (4).

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