CN112161125B

CN112161125B - Axial dislocation compensation device for interface of asymmetric pipeline and use method thereof

Info

Publication number: CN112161125B
Application number: CN202010988365.5A
Authority: CN
Inventors: 郭垒; 邵彬彬; 黄发; 张中健; 贾鹏超
Original assignee: AECC Sichuan Gas Turbine Research Institute
Current assignee: AECC Sichuan Gas Turbine Research Institute
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2022-04-22
Anticipated expiration: 2040-09-18
Also published as: CN112161125A

Abstract

The invention provides an axial dislocation compensation device for an interface of an asymmetric pipeline and a using method thereof, and relates to the technical field of aero-engine structural design. The device comprises a conduit, wherein two ends of the conduit are movably connected with asymmetric joints, and the asymmetric joints are connected with an accessory interface to be connected; the central axis of the inner cavity of the asymmetric joint is coincident with the central axis of the inner cavity of the catheter, and the central axis of the outer ring of the asymmetric joint is staggered with the central axis of the inner cavity. The invention can ensure that the axial center lines are on the same straight line by rotating the asymmetric joint, reduce the problem of overlarge assembly stress caused by the dislocation of the interface center during assembly due to the misalignment of the axial center lines of the accessory interfaces, and realize the axial dislocation compensation of the interfaces.

Description

Axial dislocation compensation device for interface of asymmetric pipeline and use method thereof

Technical Field

The disclosure relates to the technical field of aero-engine structural design, in particular to an axial dislocation compensation device for an interface of an asymmetric pipeline and a using method thereof.

Background

The aircraft engine pipe system is called the "cardiovascular" of the aircraft engine and is an important component for ensuring the reliable operation of the engine, and the requirement of the structural integrity of the aircraft engine pipe system is consistent with the requirement of the whole engine. The external pipeline of the aircraft engine is mainly used for conveying media such as fuel oil, lubricating oil and air and is an important component of an engine accessory system.

When the aircraft engine is installed as an accessory, the connection between the accessory is generally realized through a pipeline. The design of an external system of the engine is limited by space, and when the engine is in accessory layout, the axial center lines of two accessory interfaces are in the same straight line and are connected through a section of straight pipe. However, during actual assembly, due to a series of factors such as machining and assembly, axial center lines of interfaces of the two accessories are not overlapped, so that pipelines connecting the two accessories are subjected to large stress during assembly, and the pipelines are damaged due to vibration during operation of the engine. Therefore, it is important to design a connection structure capable of compensating the interface dislocation so as to reduce the stress concentration of the connection parts caused by the axial dislocation of the interface when the engine accessories are connected.

Disclosure of Invention

In view of this, the embodiment of the present disclosure provides an axial misalignment compensation device for an interface of an asymmetric pipeline and a method for using the same, which reduce the problem of excessive assembling stress caused by misalignment of the axial center lines of the interfaces of the accessories during assembling.

In order to achieve the above purpose, the invention provides the following technical scheme:

the axial dislocation compensation device for the interface of the asymmetric pipeline comprises a guide pipe, wherein two ends of the guide pipe are movably connected with asymmetric joints, and the asymmetric joints are connected with an accessory interface to be connected; the central axis of the inner cavity of the asymmetric joint is coincident with the central axis of the inner cavity of the catheter, and the central axis of the outer ring of the asymmetric joint is staggered with the central axis of the inner cavity.

Further, the asymmetric joint may be circumferentially rotatable relative to the conduit.

Furthermore, the outer wall of the interface of the asymmetric joint is provided with a limiting part, and the asymmetric joint further comprises a fixing plate and a fastening bolt, wherein the fixing plate is sleeved on the outer wall of the asymmetric joint, and the limiting part limits the fixing plate so that the fixing plate cannot be separated from the interface of the asymmetric joint; and the fixing plate is provided with a plurality of screw holes for assembling the fastening bolts, so that the fastening bolts fixedly connect the fixing plate with an accessory interface to fixedly connect the asymmetric joint with an accessory.

Further, still include the sealing washer, the sealing washer sets up in the asymmetric joint with the connected position of pipe for with the interface seal of asymmetric joint with the pipe.

Further, still including being fixed in the clamp subassembly of pipe outer wall, the spacing groove is seted up to the outer wall circumference of pipe, the clamp subassembly set up in the spacing groove, be used for right the clamp subassembly is spacing axially.

Furthermore, a clamping groove is formed in the limiting part of the outer wall of the asymmetric joint, and a sealing ring is arranged in the clamping groove and used for connecting the asymmetric joint and the accessory interface in a sealing mode.

The invention also provides a using method of the asymmetric pipeline connecting device, which comprises the following steps:

the method comprises the following steps: installing asymmetric joints at two ends of the conduit, and then inserting the asymmetric joints at the two ends into an accessory interface to be connected for fixing;

rotating the asymmetric joint according to the displacement of the dislocation of the centers of the accessory interfaces to be connected on the two sides so as to realize the compensation of the dislocation of the centers of the accessory interfaces on the two sides, reduce the assembly stress and finish the pipeline connection;

step three: and then the conduit is fixed through the hoop component, and the asymmetric joint and the accessory are fixed through the fixing plate and the fastening bolt.

The invention relates to an axial dislocation compensation device for an interface of an asymmetric pipeline and a use method thereof, which have the beneficial effects that:

(1) the asymmetric pipeline connecting device for compensating the axial dislocation of the interface fully considers the problem of axial center dislocation of the interface during assembly, reduces assembly stress generated by the dislocation of the interface center, and realizes dislocation compensation.

(2) Compared with the traditional pipeline connecting structure, the pipeline connecting structure has the advantages that the structural design is optimized in consideration of possible dislocation in assembly, the assembly stress is reduced, and the stability of connection between accessories is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an axial misalignment compensation device of an interface according to the present invention;

FIG. 2 is another schematic structural diagram of the axial misalignment compensation device of the present invention;

fig. 3 is a side view of an interface of an asymmetric joint of the present invention.

Detailed Description

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the drawings only show the components related to the present disclosure rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

As shown in fig. 1 to 3, an embodiment of the present disclosure provides an axial misalignment compensation device for an interface of an asymmetric pipeline, including a conduit 3, where two ends of the conduit 3 are movably connected to asymmetric joints 1, and the asymmetric joints 1 are connected to an interface of an accessory to be connected; the central axis of the inner cavity of the asymmetric joint 1 is coincident with the central axis of the inner cavity of the catheter 3, and the central axis of the outer ring of the asymmetric joint 1 is staggered with the central axis of the inner cavity. Further, the asymmetric joint 1 is rotatable circumferentially with respect to the conduit 3.

Based on the technical scheme of the invention, the asymmetric pipeline connecting structure for compensating the axial dislocation of the interface comprises an asymmetric joint 1 and a conduit 3 which are assembled together, wherein the central axis of an inner cavity of the asymmetric joint 1 is superposed with the central axis of an inner cavity of the conduit 3, and the central axis of an outer ring of the asymmetric joint 1 is dislocated with the central axis of the inner cavity. When the device is installed, the asymmetric joint 1 and the guide pipe 3 are installed together, then one end of the asymmetric joint 1 is connected with the accessory interface, and the asymmetric joint 1 is rotated to compensate the axial dislocation of the accessory interface.

In order to fix the installed connection structure, in a preferred embodiment, the interface outer wall of the asymmetric joint 1 is provided with a limiting part, and further comprises a fixing plate 2 and a fastening bolt, wherein the fixing plate 2 is sleeved on the outer wall of the asymmetric joint 1, and the limiting part limits the fixing plate 2 so that the fixing plate 2 cannot be disengaged from the interface of the asymmetric joint 1; the fixing plate 2 is provided with a plurality of screw holes for assembling the fastening bolts, so that the fixing plate 2 and the accessory interface are fixedly connected by the fastening bolts, and the asymmetric joint 1 and the accessory are fixedly connected.

After the asymmetric joint 1, the conduit 3 and the accessory are connected, the fixing plate 2 is connected through the fastening bolt, and the asymmetric joint 1 is fixed at the position of the accessory interface.

In order to ensure good sealing performance in the pipe, the pipe connector further comprises a sealing ring 4, wherein the sealing ring 4 is arranged at the connecting position of the asymmetric joint 1 and the guide pipe 3 and is used for sealing the interface of the asymmetric joint 1 and the guide pipe 3 and preventing gas or liquid from leaking.

In another preferred embodiment, the device further comprises a hoop component 5 fixed on the outer wall of the conduit 3, a limit groove is formed in the circumferential direction of the outer wall of the conduit 3, and the hoop component 5 is arranged in the limit groove and used for limiting the axial direction of the hoop component 5. Finally, a clamp assembly 5 is assembled, wherein the clamp assembly 5 is used for limiting the guide pipe 3 and preventing the guide pipe 3 from axially moving.

In another preferred embodiment, a clamping groove is formed in a limiting part of the outer wall of the asymmetric joint 1, and a sealing ring 4 is arranged in the clamping groove and used for connecting the asymmetric joint 1 and an accessory interface in a sealing manner.

According to the invention, the asymmetric joint 1, the fixing plate 2, the guide pipe 3, the sealing ring 4 and the hoop component 5 are connected through the bolt, so that the connection structure of the asymmetric pipeline with the compensation interface axially staggered is integrally formed. The asymmetric joint 1 is arranged on an accessory interface, can rotate around the axial direction of the interface, and compensates the axial center dislocation of the interface.

The fixing plate 2 is fixed on the accessory through a bolt, so that the asymmetric joint 1 is prevented from being separated from the accessory interface, and the axial limiting effect is achieved.

The conduit 3 is used for connecting the asymmetric joint 1, and the length of the conduit 3 can be designed according to actual requirements.

The sealing ring 4 is mounted on the conduit 3 to provide a seal to prevent gas or liquid from leaking.

The hoop component 5 is used for preventing the guide pipe 3 from moving left and right along the axial direction, and plays a role in limiting.

When the asymmetric pipeline connecting device is connected, the operation is as follows:

(1) installing a sealing ring 4 on the guide pipe 3, and coating lubricating grease on the periphery of the sealing ring 4;

(2) inserting the guide pipe 3 of the installed sealing ring 4 into the asymmetric joint 1;

(3) installing a sealing ring 4 on a clamping groove of the limiting part of the outer wall of the asymmetric joint 1, and coating lubricating grease on the periphery of the sealing ring 4;

(4) inserting the asymmetric joint 1 into the accessory interface, rotating the asymmetric joint 1 according to the axial dislocation amount of the two interfaces to compensate the axial dislocation of the accessory interface, and fixing the asymmetric joint 1 at the position of the accessory interface through the fixing plate 2 and the fastening bolt; the catheter 3 is prevented from moving in the axial direction by being fixed by the clip assembly 5.

The displacement compensation amount of the non-axisymmetrical pipeline connecting structure component is 0-2X, and the asymmetric joint 1 can be designed according to the actual situation so as to realize axial dislocation compensation of the accessory interface. Wherein the maximum displacement compensation amount is 2X (X is an offset amount), as shown in fig. 2.

The asymmetric joint 1 and the conduit 3 are connected with the asymmetric joint 1 through the hoop component 5 without welding, so that the conduit 3 can be prevented from moving along the axial direction on one hand, and a limiting effect is achieved; on the other hand, because the central axis of the outer ring of the asymmetric joint 1 is staggered with the central axis of the inner cavity, the axial central lines of the accessories on two sides can be ensured to be on the same straight line by rotating the asymmetric joint 1 according to the offset of the axial central between the accessories, so that the larger assembly stress caused by the misalignment of the axes is reduced, and the connecting pipeline is damaged when the engine works. At present, the asymmetric pipeline connecting structure is applied to the design of an external pipeline structure of a certain type of engine, and assembly and test results show that the asymmetric pipeline connecting structure is convenient to install in a staggered mode relative to the center of a connector, assembly stress is reduced, and the stability of connection between accessories is improved.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure 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 disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. The axial dislocation compensation device for the interface of the asymmetric pipeline is characterized by comprising a guide pipe, wherein two ends of the guide pipe are movably connected with asymmetric joints, and the asymmetric joints are connected with the interfaces of accessories to be connected; the central axis of the inner cavity of the asymmetric joint is coincided with the central axis of the inner cavity of the catheter, and the central axis of the outer ring of the asymmetric joint is staggered with the central axis of the inner cavity;

the asymmetric joint is circumferentially rotatable relative to the conduit;

the outer wall of the interface of the asymmetric joint is provided with a limiting part, and the asymmetric joint further comprises a fixing plate and a fastening bolt, wherein the fixing plate is sleeved on the outer wall of the asymmetric joint, and the limiting part limits the fixing plate so that the fixing plate cannot be separated from the interface of the asymmetric joint; the fixing plate is provided with a plurality of screw holes for assembling the fastening bolts, so that the fastening bolts can fixedly connect the fixing plate with an accessory interface to fixedly connect the asymmetric joint with an accessory;

the clamp component is fixed on the outer wall of the conduit, a limiting groove is formed in the circumferential direction of the outer wall of the conduit, and the clamp component is arranged in the limiting groove and is used for limiting the axial direction of the clamp component.

2. The device for compensating the axial misalignment of the interface of the asymmetric pipeline as claimed in claim 1, further comprising a sealing ring disposed at a connecting position of the asymmetric joint and the conduit for sealing the interface of the asymmetric joint and the conduit.

3. The axial misalignment compensation device for the asymmetric pipeline interfaces as claimed in claim 2, wherein the limiting portion of the outer wall of the asymmetric joint is provided with a slot, and a sealing ring is disposed in the slot for sealing the asymmetric joint with the accessory interface.

4. A method for using the axial misalignment compensation device of the interface of the asymmetric pipeline according to any one of claims 1 to 3, wherein: the method comprises the following steps: