CN113107702A

CN113107702A - Adjustable spray pipe structure

Info

Publication number: CN113107702A
Application number: CN202110468116.8A
Authority: CN
Inventors: 胡春晓; 赵春生; 宋经远; 杜桂贤
Original assignee: AECC Shenyang Engine Research Institute
Current assignee: AECC Shenyang Engine Research Institute
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-07-13
Anticipated expiration: 2041-04-28
Also published as: CN113107702B

Abstract

The application belongs to the technical field of spray tube structural design, concretely relates to adjustable spray tube structure, include: a nozzle connecting cylinder; two distance plates which are oppositely arranged and connected to the outlet end of the spray pipe connecting cylinder; two multi-layer splints, each layer being connected in compound; the two multi-layer clamping plates are oppositely arranged, the innermost layer of each multi-layer clamping plate is connected to the outlet end of the spray pipe connecting cylinder, is positioned between the two distance plates and is in sealing contact with the two distance plates; and each actuating cylinder is correspondingly hinged between the outermost layer of one multi-layer clamping plate and the spray pipe connecting cylinder so as to drive the corresponding multi-layer clamping plate to stretch and retract.

Description

Adjustable spray pipe structure

Technical Field

The application belongs to the technical field of spray pipe structural design, and particularly relates to an adjustable spray pipe structure.

Background

The area of the jet pipe outlet of the aircraft engine is designed according to a set design point, and the area of the jet pipe outlet of the aircraft engine designed in the design mode is fixed and is not adjustable, so that the following defects exist:

1) because the theory and the reality have deviation and errors are inevitably introduced by machining and assembling, the working state of the aircraft engine deviates from a set design point to a certain extent, and the optimal efficiency is difficult to achieve;

2) and the working efficiency is low when the deviation from the set design point is large.

The present application has been made in view of the above-mentioned technical drawbacks.

It should be noted that the above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and the above background disclosure should not be used for evaluating the novelty and inventive step of the present application without explicit evidence to suggest that the above content is already disclosed at the filing date of the present application.

Disclosure of Invention

It is an object of the present application to provide a variable nozzle configuration that overcomes or mitigates at least one of the technical disadvantages known to exist.

The technical scheme of the application is as follows:

a variable nozzle structure comprising:

a nozzle connecting cylinder;

two distance plates which are oppositely arranged and connected to the outlet end of the spray pipe connecting cylinder;

two multi-layer splints, each layer being connected in compound; the two multi-layer clamping plates are oppositely arranged, the innermost layer of each multi-layer clamping plate is connected to the outlet end of the spray pipe connecting cylinder, is positioned between the two distance plates and is in sealing contact with the two distance plates;

and each actuating cylinder is correspondingly hinged between the outermost layer of one multi-layer clamping plate and the spray pipe connecting cylinder so as to drive the corresponding multi-layer clamping plate to stretch and retract.

According to at least one embodiment of the present application, in the above-mentioned variable nozzle pipe structure, the innermost layer of each multi-layer clamp plate is an inner bearing plate, the outermost layer is an outer bearing plate, and the middle layer is a thin sandwich plate.

According to at least one embodiment of the present application, the variable nozzle structure further includes:

the central body is arranged at the outlet end of the nozzle connecting cylinder, is positioned between the two distance plates and the two multilayer clamping plates, is in sealing contact with the two distance plates, and can deflect between the two multilayer clamping plates.

In accordance with at least one embodiment of the present application, the variable nozzle tip structure described above has a cross-section of the centerbody in the direction of the two sandwich plates that is tapered.

one end of each connecting rod is correspondingly hinged with the outermost layer of one multi-layer clamping plate, and the other end of each connecting rod is connected with the central body in a sliding manner;

when the two multi-layer splints stretch asynchronously, the two connecting rods act to enable the central body to deflect towards the direction of the multi-layer splint with small extension;

when the two multi-layer splints are stretched synchronously, the central body is not deflected under the action of the two connecting rods.

the torsional joint is connected with the central body and is connected with one end of the two connecting rods back to the corresponding multilayer clamping plate in a sliding way.

According to at least one embodiment of the present application, in the variable nozzle structure, the torsion joint has a strip-shaped through hole;

the variable nozzle structure further comprises:

the connective bar runs through the bar through-hole setting, can follow the bar through-hole and slide, and every end corresponds to and links to each other with a connecting rod one end that corresponds the multilayer splint articulated dorsad.

According to at least one embodiment of the present application, the variable nozzle structure is provided with a twist hole on the nozzle connecting cylinder;

the torsion joint is provided with a torsion bulge; the torsion protrusion passes through the torsion hole and is connected to the central body.

According to at least one embodiment of the present application, the structure of the variable nozzle includes two sets of two connecting rods and corresponding torsion joints, and each set is located on one side of one distance plate.

Drawings

FIG. 1 is a schematic illustration of a variable nozzle configuration provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of two multi-layer clamping plates synchronously telescoping in the variable nozzle structure provided by the embodiment of the present application;

FIG. 3 is a schematic diagram of asynchronous telescoping of two multi-layer clamping plates in a variable nozzle structure according to an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of the asynchronous telescoping of two multi-layer clamping plates in a variable nozzle configuration provided by an embodiment of the present application;

wherein:

1-a nozzle connecting cylinder; 2-distance plates; 3-a multi-layer splint; 4-an actuator cylinder; 5-a central body; 6-connecting rod; 7-a torsion joint; 8-connecting rod.

For the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; further, the drawings are for illustrative purposes, and terms describing positional relationships are limited to illustrative illustrations only and are not to be construed as limiting the patent.

Detailed Description

In order to make the technical solutions and advantages of the present application clearer, the technical solutions of the present application will be further clearly and completely described in the following detailed description with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only some of the embodiments of the present application, and are only used for explaining the present application, but not limiting the present application. It should be noted that, for convenience of description, only the parts related to the present application are shown in the drawings, other related parts may refer to general designs, and the embodiments and technical features in the embodiments in the present application may be combined with each other to obtain a new embodiment without conflict.

In addition, unless otherwise defined, technical or scientific terms used in the description of the present application shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", and the like used in the description of the present application, which indicate orientations, are used only to indicate relative directions or positional relationships, and do not imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly, and thus, should not be construed as limiting the present application. The use of "first," "second," "third," and the like in the description of the present application is for descriptive purposes only to distinguish between different components and is not to be construed as indicating or implying relative importance. The use of the terms "a," "an," or "the" and similar referents in the context of describing the application is not to be construed as an absolute limitation on the number, but rather as the presence of at least one. The word "comprising" or "comprises", and the like, when used in this description, is intended to specify the presence of stated elements or items, but not the exclusion of other elements or items.

Further, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and the like are used in the description of the invention in a generic sense, e.g., connected as either a fixed connection or a removable connection or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, or they may be connected through the inside of two elements, and those skilled in the art can understand their specific meaning in this application according to the specific situation.

The present application is described in further detail below with reference to fig. 1 to 4.

A variable nozzle structure comprising:

a nozzle connecting cylinder 1;

two distance plates 2 which are oppositely arranged and connected to the outlet end of the spray pipe connecting cylinder 1;

two multi-layer splints 3, the layers are connected in a compound way; the two multi-layer clamping plates 3 are oppositely arranged, the innermost layer of each multi-layer clamping plate 3 is connected to the outlet end of the spray pipe connecting cylinder 1, is positioned between the two distance plates 2 and is in sealing contact with the two distance plates 2;

two actuating cylinders 4, each actuating cylinder 4 is correspondingly hinged between the outermost layer of one multi-layer clamping plate 3 and the spray pipe connecting cylinder 1 so as to drive the corresponding multi-layer clamping plate 3 to stretch and contract.

For the adjustable nozzle structure disclosed in the above embodiments, it can be understood by those skilled in the art that it can be used as a nozzle of an aircraft engine, and when it is used as a nozzle of an aircraft engine, the inlet end of the nozzle connecting cylinder 1 can be connected to an engine nozzle, and because it is designed to have a structure in which the distance plates 2 and the multi-layer splints 3 are matched at the outlet end of the nozzle connecting cylinder 1, the two multi-layer splints 3 are oppositely arranged between the two distance plates 2 and can be extended and retracted under the driving of the actuating cylinder 4, so that the adjustment of the outlet area of the nozzle of the aircraft engine can be realized to adapt to various working states of the engine, and the working efficiency can be ensured.

For the adjustable nozzle structure disclosed in the above embodiment, it can be understood by those skilled in the art that when two multi-layer clamping plates 3 are synchronously stretched, that is, when the piston rods of two actuator cylinders 4 are synchronously stretched, only the nozzle outlet area is changed, and the nozzle outlet angle is not changed, when two multi-layer clamping plates 3 are asynchronously stretched, that is, when the piston rods of two actuator cylinders 4 are asynchronously stretched, not only the nozzle outlet area is changed, but also the nozzle outlet angle is correspondingly changed, so that part of the thrust of the engine can be used as the operating force of the aircraft, and the adjustable nozzle structure has important significance for improving the operating performance, the stealth performance, the aerodynamic performance of the aircraft and reducing the weight.

With regard to the adjustable nozzle structure disclosed in the above embodiments, it can be further understood by those skilled in the art that the design of the adjustable nozzle structure is that the two layers of the multi-layer clamping plates 3 connected to the outlet end of the nozzle connecting cylinder 1 are connected in a compound manner, and the adjacent layers can only contact the tangential direction of the surface and slide in a small range, so that the two layers of the clamping plates 3 can not leak in the expansion process.

In some alternative embodiments, the inner most layer of each multi-layer clamp plate 3 is an inner bearing plate, the outer most layer is an outer bearing plate, and the middle layer is a thin sandwich plate, so as to have light weight under the condition of ensuring the connection strength with the outlet end of the nozzle connecting cylinder 1 and the corresponding actuating cylinder 4.

In some optional embodiments, the variable nozzle structure further includes:

the central body 5, which is arranged at the outlet end of the nozzle adapter 1, is located between the two distance plates 2 and the two sandwich plates 3, is in sealing contact with the two distance plates 2, and can be deflected between the two sandwich plates 3.

With regard to the structure of the adjustable nozzle disclosed in the above embodiments, it can be understood by those skilled in the art that the design of the adjustable nozzle structure is that the outlet end of the nozzle connecting cylinder 1 is provided with the center body 5 which can deflect, so that on one hand, when the adjustable nozzle structure is used as a nozzle of an aircraft engine, a forward high-temperature component can be effectively shielded, and the stealth performance of the aircraft engine can be improved; alternatively, it may be deflected between two multi-layer clamping plates 3 to change the nozzle outlet angle.

In some alternative embodiments, the cross-section of the central body 5 in the direction of the two sandwich plates 3 is tapered for better aerodynamic performance.

In some optional embodiments, the variable nozzle structure further includes:

one end of each connecting rod 6 is correspondingly hinged with the outermost layer of one multi-layer splint 3, and the other end of each connecting rod 6 is connected with the central body 5 in a sliding way;

when the two multi-layer splints 3 are asynchronous in extension and retraction, the two connecting rods 6 act to enable the central body 5 to deflect towards the multi-layer splints 3 with small extension;

when the two multi-layer splints 3 are synchronously stretched, the two connecting rods 6 act to prevent the central body 5 from deflecting.

With regard to the adjustable nozzle structure disclosed in the above embodiments, it can be understood by those skilled in the art that one end of each connecting rod 6 is hinged to the outermost layer of one multi-layer clamping plate 3, and the other end is slidably connected to the central body 5, so that when the two multi-layer clamping plates 3 are asynchronous to each other, the two connecting rods 6 act to deflect the central body 5 toward the multi-layer clamping plate 3 with a small amount of extension; when the two multi-layer clamping plates 3 are synchronously stretched, the central body 5 is not deflected under the action of the two connecting rods 6, so that the area and the angle of the outlet of the spray pipe can be cooperatively adjusted, and the area and the angle of the outlet of the spray pipe are higher in adjusting efficiency.

In some optional embodiments, the variable nozzle structure further includes:

a torsion joint 7 connected to the central body 5 and slidably connected to the ends of the two connecting rods 6 facing away from the corresponding multi-layer jaws 3.

In some alternative embodiments, the above-mentioned variable nozzle structure has a strip-shaped through hole on the torsion joint 7;

the variable nozzle structure further comprises:

the connective bar 8 runs through the bar through-hole setting, can follow the bar through-hole and slide, and every end corresponds to articulated with the one end that a connecting rod 6 corresponds the multi-layer splint 3 dorsad, and two connecting rods 6 one ends that correspond multi-layer splint 3 dorsad promptly pass through connective bar 8 and connect in the both sides of torque joint 7 to this can realize two connecting rods 6 and to the cooperativity of center body effect under the flexible drive of two multi-layer splint 3.

In some alternative embodiments, the variable nozzle structure described above, the nozzle adapter 1 has a twist hole;

the torsion joint 7 is provided with a torsion bulge; the torsion protrusion passes through the torsion hole and is connected to the central body 5.

In some alternative embodiments, the above-described variable nozzle arrangement has two sets of two connecting rods 6 and their corresponding torsional joints 7, each set being located on one side of one of the distance plates 2.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

Having thus described the present application in connection with the preferred embodiments illustrated in the accompanying drawings, it will be understood by those skilled in the art that the scope of the present application is not limited to those specific embodiments, and that equivalent modifications or substitutions of related technical features may be made by those skilled in the art without departing from the principle of the present application, and those modifications or substitutions will fall within the scope of the present application.

Claims

1. A variable nozzle structure, comprising:

a nozzle connecting cylinder (1);

two distance plates (2) which are arranged oppositely and connected to the outlet end of the spray pipe connecting cylinder (1);

two multi-layer splints (3) which are connected in a compound way; the two multi-layer clamping plates (3) are oppositely arranged, the innermost layer of each multi-layer clamping plate (3) is connected to the outlet end of the spray pipe connecting cylinder (1), is positioned between the two distance plates (2) and is in sealing contact with the two distance plates (2);

the actuating cylinders (4) are correspondingly hinged between the outermost layer of one multi-layer clamping plate (3) and the spray pipe connecting cylinder (1) so as to drive the corresponding multi-layer clamping plate (3) to stretch and retract.

2. The variable nozzle structure of claim 1,

the innermost layer of each multi-layer clamping plate (3) is an inner bearing plate, the outermost layer is an outer bearing plate, and the middle layer is a thin sandwich plate.

3. The variable nozzle structure of claim 1,

further comprising:

and the central body (5) is arranged at the outlet end of the spray pipe connecting cylinder (1) and is positioned between the two distance plates (2) and the two multi-layer clamping plates (3), is in sealing contact with the distance plates (2), and can deflect between the two multi-layer clamping plates (3).

4. The variable nozzle structure of claim 3,

the central body (5) is in a spinning cone shape along the section of the direction of the two multi-layer clamping plates (3).

5. The variable nozzle structure of claim 3,

further comprising:

one end of each connecting rod (6) is correspondingly hinged with the outermost layer of one of the multi-layer clamping plates (3), and the other end of each connecting rod (6) is connected with the central body (5) in a sliding manner;

when the two multi-layer splints (3) are asynchronous in extension and retraction, the two connecting rods (6) act to enable the central body (5) to deflect towards the multi-layer splint (3) with small extension amount;

when the two multi-layer splints (3) are synchronously stretched, the two connecting rods (6) act to ensure that the central body (5) does not deflect.

6. The variable nozzle structure of claim 5,

further comprising:

the torsion joint (7) is connected with the central body (5) and is connected with one end of each connecting rod (6) back to the corresponding multilayer splint (3) in a sliding mode.

7. The variable nozzle structure of claim 6,

the torsion joint (7) is provided with a strip-shaped through hole;

the variable nozzle structure further comprises:

and the connecting rod (8) penetrates through the bar-shaped through hole, can slide along the bar-shaped through hole, and each end of the connecting rod corresponds to one end of the connecting rod (6) which is back to the corresponding multilayer clamping plate (3) and is hinged.

8. The variable nozzle structure of claim 6,

the spray pipe connecting cylinder (1) is provided with a twisting hole;

the torsion joint (7) is provided with a torsion bulge; the torsion protrusion passes through the torsion hole and is connected to the central body (5).

9. The variable nozzle structure of claim 6,

two connecting rods (6) and two groups of corresponding torsion joints (7) are arranged, and each group is correspondingly positioned at one side of one distance plate (2).