CN108104970B

CN108104970B - Binary spray pipe and aircraft with same

Info

Publication number: CN108104970B
Application number: CN201711311185.8A
Authority: CN
Inventors: 徐速; 张少丽; 赵春生
Original assignee: AECC Shenyang Engine Research Institute
Current assignee: AECC Shenyang Engine Research Institute
Priority date: 2017-12-11
Filing date: 2017-12-11
Publication date: 2020-09-18
Anticipated expiration: 2037-12-11
Also published as: CN108104970A

Abstract

The invention discloses a binary spray pipe and an airplane with the binary spray pipe. The two-dimensional spray pipe comprises a first bent spray pipe, a second bent spray pipe and a flat plate, wherein the outlet of the first bent spray pipe and the outlet of the second bent spray pipe are overlapped, and the outlet of the first bent spray pipe and the outlet of the second bent spray pipe share the flat plate; the first bent spray pipe extends from one end connected with the straight plate to the other end in a bending way; the second bent spray pipe extends from one end connected with the straight plate to the other end in a bending way; the extension shape of the first bent spray pipe is matched with that of the second bent spray pipe, so that high-temperature components of the engine are shielded. The binary spray pipe of this application buckles the extension shape cooperation of spray pipe through the extension shape of first spray pipe of buckling and the second to shelter from engine high temperature part and realize the infrared stealthy function of sheltering from to engine high temperature part's sheltering from.

Description

Binary spray pipe and aircraft with same

Technical Field

The invention relates to the technical field of engines, in particular to a binary nozzle and an airplane with the binary nozzle.

Background

The working envelope range of the aircraft engine is wider and wider, the falling pressure ratio range reaches dozens, and a spray pipe with stronger expansion capacity is needed; in order to improve the combat efficiency and improve the stealth capability, the spray pipe is required to shield high-temperature parts of the engine, so that the infrared radiation performance is reduced; to improve the maneuverability of the battle, the nozzle is required to realize vector deflection. Most of the existing vector deflection functions are mechanical adjustment, the structure is complex, and more components are arranged.

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 invention to provide a binary nozzle which overcomes or at least alleviates at least one of the above-mentioned disadvantages of the prior art.

In order to achieve the above object, the present invention provides a binary nozzle, which includes a first bent nozzle, a second bent nozzle, and a flat plate, wherein an outlet of the first bent nozzle and an outlet of the second bent nozzle are stacked, and the outlet of the first bent nozzle and the outlet of the second bent nozzle share the flat plate;

the first bent spray pipe extends from one end connected with the straight plate to the other end in a bending way;

the second bent spray pipe extends from one end connected with the straight plate to the other end in a bending way;

the extension shape of the first bent spray pipe is matched with that of the second bent spray pipe, so that high-temperature components of the engine are shielded.

Preferably, the dual nozzle further comprises a first side wall plate, and the first side wall plate is fixedly connected with the first bent nozzle and the straight plate.

Preferably, the dual nozzle further comprises a second side wall plate, and the second side wall plate is fixedly connected with the second bent nozzle and the straight plate.

Preferably, the first bending nozzle and the second bending nozzle are convergent nozzles or convergent-divergent nozzles.

Preferably, the first bent spray pipe comprises a round-square transition section and a binary spray pipe bent section which are connected with each other; the second bent spray pipe comprises a round-square transition section and a binary spray pipe bent section which are connected with each other.

Preferably, the first bending spray pipe is fixedly connected with the straight plate in a mechanical mode or integrally cast; and the second bent spray pipe and the straight plate are fixedly connected in a mechanical mode or integrally cast.

The present application further provides an aircraft including a binary nozzle as described above.

According to the dual-spray pipe, the extension shape of the first bent spray pipe is matched with the extension shape of the second bent spray pipe, so that high-temperature components of an engine are shielded, the high-temperature components of the engine are shielded, and an infrared stealth function is realized; the static pressures of the upper wall surface and the lower wall surface of the flat plate are different through the difference of the pneumatic parameters of the first bending spray pipe and the second bending spray pipe, so that the torque is generated, and the vector function is realized.

Drawings

FIG. 1 is a system schematic of a first embodiment of the binary nozzle of the present application.

FIG. 2 is another schematic illustration of the dual nozzle configuration shown in FIG. 1.

FIG. 3 is another schematic illustration of the dual nozzle configuration shown in FIG. 1.

FIG. 4 is another schematic illustration of the dual nozzle configuration shown in FIG. 1.

Reference numerals:

1	first bending spray pipe	4	Second side wall plate
				2	Second bending spray pipe	5	Flat and straight board
3	First side wall board

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. 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 only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. 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 invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

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

FIG. 1 is a system schematic of a first embodiment of the binary nozzle of the present application. FIG. 2 is another schematic illustration of the dual nozzle configuration shown in FIG. 1. FIG. 3 is another schematic illustration of the dual nozzle configuration shown in FIG. 1. FIG. 4 is another schematic illustration of the dual nozzle configuration shown in FIG. 1.

The two-dimensional nozzle shown in fig. 1 to 4 includes a first bending nozzle 1, a second bending nozzle 2, and a flat plate 5, wherein an outlet of the first bending nozzle 1 and an outlet of the second bending nozzle 2 are stacked, and the outlet of the first bending nozzle 1 and the outlet of the second bending nozzle 2 share the flat plate 5;

the first bent spray pipe 1 extends from one end connected with the straight plate 5 to the other end in a bending way;

the second bent spray pipe 2 extends from one end connected with the straight plate 5 to the other end in a bending way;

the extension shape of the first bent nozzle 1 is matched with that of the second bent nozzle 2, so that high-temperature components of the engine are shielded.

Referring to fig. 3, in the present embodiment, the dual nozzle further includes a first sidewall plate 3 and a second sidewall plate 4, wherein the first sidewall plate 3 is fixedly connected to a flat plate 5.

The second side wall panel 4 is fixedly connected to the flat panel 5.

The first side wall plate 3 and the second side wall plate 4 are added, so that the buffer transition effect on high-speed gas expansion is realized, and the pneumatic performance is improved.

In the present embodiment, the first bending nozzle 1 and the second bending nozzle 2 are convergent nozzles or convergent-divergent nozzles.

The first bent spray pipe 1 comprises a round-square transition section and a binary spray pipe bent section which are connected with each other;

the second bending nozzle 2 is arranged to comprise a round-square transition section and a binary nozzle bending section which are connected with each other. It can be understood that the first bending nozzle 1 and the second bending nozzle 2 can be subjected to round-to-square transition first and then to binary nozzle bending; or the whole bending process of the first bending spray pipe 1 and the second bending spray pipe 2 is in round-to-square transition.

In this embodiment, the first bending nozzle 1 and the second bending nozzle 2 are rounded to reduce the air flow loss.

In the embodiment, the first bending nozzle 1 and the straight plate 5 are fixedly connected in a mechanical mode or integrally cast; the second bending spray pipe 2 and the flat plate 5 are fixedly connected in a mechanical mode or integrally cast.

Example 1: referring to fig. 1 to 4, the first bending spray pipe 1 and the second bending spray pipe 2 are symmetrical in structure from left to right and up to down, and the first bending spray pipe 1 and the second bending spray pipe 2 comprise a circular-square section and a bending binary spray pipe section; outlets of the first bending spray pipe 1 and the second bending spray pipe 2 are arranged side by side up and down and are fixedly connected with a common straight plate 5; the first side wall plate 3 is fixedly connected with the first bent spray pipe 1 and the straight plate 5; the second side wall plate 4 is fixedly connected with the second bent spray pipe 2 and the straight plate 5; the outlets of the first bent spray pipe 1 and the second bent spray pipe 2 cannot see the inlets of the spray pipes, so that high-temperature parts of the engine are shielded, and the infrared stealth function is realized; the static pressures of the upper wall surface and the lower wall surface of the flat plate 5 are different through the difference of the pneumatic parameters of the first bent spray pipe 1 and the bent spray pipe 2, so that torque is generated, and a vector function is realized.

Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The binary spray pipe is characterized by comprising a first bent spray pipe (1), a second bent spray pipe (2) and a flat plate (5), wherein an outlet of the first bent spray pipe (1) and an outlet of the second bent spray pipe (2) are overlapped, and the outlet of the first bent spray pipe (1) and the outlet of the second bent spray pipe (2) share the flat plate (5);

the first bent spray pipe (1) is bent and extended from one end connected with the straight plate (5) to the other end;

the second bent spray pipe (2) is bent and extended from one end connected with the straight plate (5) to the other end;

the extension shape of the first bent spray pipe (1) is matched with the extension shape of the second bent spray pipe (2), so that high-temperature components of the engine are shielded.

2. The dual nozzle of claim 1, further comprising a first sidewall (3), wherein the first sidewall (3) is fixedly connected to the first angled nozzle (1) and the flat plate (5).

3. The dual nozzle of claim 1, further comprising a second sidewall plate (4), wherein the second sidewall plate (4) is fixedly connected to the second angled nozzle (2) and the flat plate (5).

4. The dual nozzle of claim 1, wherein the first angled nozzle (1) and the second angled nozzle (2) are convergent nozzles or convergent-divergent nozzles.

5. The binary nozzle as claimed in claim 1, characterized in that the first bent nozzle (1) is provided to comprise a round-to-square transition section and a binary nozzle bent section which are connected to each other;

the second bent spray pipe (2) is arranged to comprise a round-square transition section and a binary spray pipe bending section which are connected with each other.

6. The binary lance defined in claim 1 wherein the first bent lance (1) is fixedly connected to the flat plate (5) by mechanical means or cast integrally; the second bent spray pipe (2) and the straight plate (5) are fixedly connected in a mechanical mode or integrally cast.

7. An aircraft, characterized in that it comprises a binary nozzle according to any one of claims 1 to 6.