CN104806379B - A Nozzle with Reverse Thrust Function - Google Patents

Abstract

The invention relates to the design field of an aeroengine nozzle and a thrust reverser device, and provides a nozzle with a reverse thrust function, so that the rectangular nozzle can realize reverse thrust. Each outer culvert outlet of the spray pipe with reverse thrust function of the present invention is provided with a rotatable regulating piece through a rotating shaft, and the area of the regulating piece is equal to the area of one said outer culvert outlet; The regulating piece is driven to rotate around the rotating shaft, and when the regulating piece is rotated to a predetermined position, it can block the outlet of the entire outer culvert, thereby generating an opposite thrust and acting as a reverse thrust to realize the reverse thrust of the rectangular nozzle, which has strong practicability and a wide range of uses.

Description

A Nozzle with Reverse Thrust Function

technical field

The invention relates to the design field of an aeroengine nozzle and a thrust reverser device, in particular to a nozzle with a thrust reverse function.

Background technique

Existing thrust reversers are mainly suitable for axisymmetric nozzles, that is, nozzles with a circular cross-section. There is no suitable thrust reverser for rectangular nozzles, so research in this area is needed.

Contents of the invention

The object of the present invention is to provide a nozzle with reverse thrust function, so that the rectangular nozzle can realize reverse thrust.

The technical solution of the present invention is: a nozzle with a reverse thrust function, comprising a rectangular nozzle body consisting of two vertical side plates and at least four horizontal plates, the shape of the inlet and outlet of the rectangular nozzle body is Rectangular, at the same time, the airflow channel is divided into two identical outer culverts distributed up and down and an inner content between the two outer culverts, including the adjustment piece, actuator, main tie rod and auxiliary tie rod;

The outlet of each outer culvert is provided with the adjusting piece through a rotating shaft, the adjusting piece and the rotating shaft are perpendicular to the two vertical side plates, the adjusting piece can rotate around the rotating shaft, and each The area of the regulating piece of the block is equal to the area of one of the outlets of the outer culvert;

The actuating cylinders include two, which are symmetrically fixed on the outside of the two vertical side plates, and the actuating cylinders on each side are located at the midpoint of the vertical direction of the vertical side plates;

The driving end of the actuator on the same side is hinged to one end of the main tie rod and the auxiliary tie rod, and the other end of the main tie rod is slidably connected to the end of the rotating shaft of one of the adjusting pieces, and the auxiliary tie rod The other end of the other end is slidably connected with the rotating shaft end of another said regulating piece.

Optionally, one end of the actuator is hinged to one end of the main tie rod and one end of the auxiliary tie rod through a pin, and the axis of the pin is parallel to the rotation axis of the adjusting piece.

Optionally, the main tie rods include two, respectively located on the outer sides of the two vertical side plates, and each of the main tie rods is connected to the driving end of the actuator cylinder and the auxiliary tie rod on the same side respectively. One end is hinged, and the two main pull rods are connected to the ends of the rotating shafts of the adjusting pieces located on the upper part of the same side.

Optionally, the auxiliary tie rods include two, respectively located on the outer sides of the two vertical side plates, and each of the auxiliary tie rods is connected to the driving end of the actuator and the main tie rod on the same side respectively. One end is hinged, and the two auxiliary tie rods are connected to the ends of the rotating shafts of the adjustment pieces located at the lower part of the same side.

The advantages of the present invention are: the nozzle pipe with reverse thrust function of the present invention has a simple structure, and the actuators on both sides of the rectangular nozzle can adjust the movement of the regulating plate through the pull rod, so as to realize the reverse thrust function of the rectangular nozzle. Strong and widely used, it has a remarkable effect on realizing the reverse thrust of the rectangular nozzle.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention.

Fig. 1 is the three-dimensional view when the nozzle of the present invention has reverse thrust function a kind of state;

Fig. 2 is a perspective view of another state of the nozzle with reverse thrust function of the present invention.

detailed description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated.

As shown in Figures 1 to 2, the nozzle with reverse thrust function of the present invention can realize the reverse thrust of a rectangular nozzle. The nozzle can include a rectangular nozzle body 1, which is composed of two vertical side plates and a plurality of horizontal plates. The inlet and outlet shapes of the rectangular nozzle body 1 are rectangular; The upper and lower outer meanings (ie, airflow channels) and the inner meanings (ie, airflow channels) between the two outer meanings.

The nozzle also includes an actuator 2, which is fixedly arranged on the outside of the vertical side plate by means of welding or bolts. The actuating cylinder 2 includes two, which are fixedly arranged on the outer sides of the two vertical side plates respectively, and the actuating cylinder 2 on each side is located at the midpoint in the vertical direction of the vertical side plates , and the two actuators 2 on both sides are symmetrically distributed.

The spray pipe also includes a regulating piece 3; an regulating piece 3 with an area equal to that of the exit of the culvert is provided at the outlet of each culvert, and the regulating piece 3 is perpendicular to the two vertical side plates. It should be noted that the adjusting piece 3 can be rotatably arranged at the outlet of the outer culvert in various ways. In this embodiment, it is connected by a rotating shaft perpendicular to the vertical side plate. The rotating shaft can be one of the adjusting pieces 3 One long side, the adjusting piece 3 can rotate around the shaft; further, vertical pin shafts (two for each side plate, symmetrically distributed up and down) are set on the vertical side plate of the rectangular nozzle body 1, the axis of the pin shaft and the adjustment The axis of the rotating shaft of the sheet 3 is parallel, and the axial end of the adjusting sheet 3 is fixedly connected with the pin shaft, so that the adjusting sheet 3 can rotate around the pin shaft, and the specific structure will not be repeated.

The utility model includes upper and lower outer culverts, so the adjusting piece 3 includes two, symmetrically distributed up and down, that is, an adjusting piece 3 is arranged at the outlet of the upper and lower outer culverts, and the adjusting piece 3 can be completely rotated to a certain angle. Block the outlet of the outer culvert, so that the gas in the channel of the outer culvert returns to realize the reverse thrust function. In addition, when there is no need to push back, the adjusting piece 3 can be rotated to the cylinder between the outer and inner cylinders, and it will be close to the cylinder to reduce the impact.

The spray pipe also includes main tie rods 4, and the number of main tie rods 4 is two. One of the main pull rods 4 is arranged on one side of the rectangular nozzle body 1 barrel (the outside of a vertical side plate), and is connected to an actuator 2 (its driving end) and an end of an auxiliary pull rod 5 on the same side respectively. hinged. Another main tie rod 4 is arranged on the other side of the cylinder of the rectangular nozzle body 1 (the outside of the other vertical side plate), and is hinged with an actuator 2 on the same side and one end of an auxiliary tie rod 5 respectively. Both main tie rods 4 are connected with the ends of the rotating shafts of the adjusting pieces 3 located on the upper part of the same side.

The spray pipe also includes auxiliary tie rods 5, and the number of auxiliary tie rods 5 is two. One of the auxiliary tie rods 5 is arranged on one side of the rectangular nozzle body 1 barrel (the outside of a vertical side plate), and is hinged with an actuator 2 and one end of a main tie rod 4 on the same side respectively. Another auxiliary tie rod 5 is arranged on the other side of the rectangular nozzle body 1 barrel (the outside of another vertical side plate), and is hinged with an actuator 2 and one end of a main tie rod 4 on the same side respectively. Both auxiliary tie rods 5 are connected with the ends of the rotating shafts of the adjusting pieces 3 located at the lower part of the same side. In addition, the main tie rods 4 and the auxiliary tie rods 5 on the same side are symmetrically distributed up and down in the vertical direction.

The operating principle of the nozzle with reverse thrust function of the present invention is:

After passing through the compressor, turbine, combustion chamber and other components, the gas enters the rectangular nozzle through the inner and outer confines, and is discharged from the rectangular outlet to generate thrust. Because one end of the main tie rod 4 and the auxiliary tie rod 5 is respectively hinged at the driving end of the actuator 2, and the other end of the main tie rod 4 and the auxiliary tie rod 5 is respectively slidably connected to the end of a rotating shaft of a regulating piece 3, when the rectangular spray When the actuators 2 on both sides of the tube body 1 move, the main tie rod 4 and the auxiliary tie rod 5 act on the upper and lower adjustment pieces 3 respectively, so that the main tie rod 4 and the auxiliary tie rod 5 respectively drive the upper and lower adjustment pieces 3 around the cylinder body. pin rotation. When the upper and lower adjusting pieces 3 are rotated to predetermined positions respectively, the outlet of the entire outer culvert can be blocked, thereby generating opposite thrust and acting as a reverse thrust.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (4)

1. a kind of have the anti-jet pipe pushing away function, including rectangular nozzle body (1), by two blocks of vertical side plates and at least four pieces levels Plate is constituted, and the inlet and outlet of described rectangular nozzle body (1) is shaped as rectangle, simultaneously gas channel be divided into two identical and on The outer culvert of lower distribution and be located at two outward contain between intension it is characterised in that also include adjustment sheet (3), pressurized strut (2), Main tie (4) and subtie (5)；

Each outer exit of containing is provided with described adjustment sheet (3) by a rotating shaft, and described adjustment sheet (3) is all vertical with described rotating shaft Directly in described two blocks vertical side plates, described adjustment sheet (3) is around described axis of rotation, and every piece of described adjustment sheet (3) area and one The individual described outer area equation containing outlet；

Described pressurized strut (2) includes two, the symmetrical outside being fixedly installed on described two blocks vertical side plates, and every side Described pressurized strut (2) is located at the point midway of described vertical side plate vertical direction；

The drive end of described pressurized strut (2) of homonymy is hinged with one end of described main tie (4) and described subtie (5), described The other end of main tie (4) is slidably connected with the roller end of one of described adjustment sheet (3), described subtie (5) another One end is slidably connected with the roller end of another piece of described adjustment sheet (3).

2. according to claim 1 there is the anti-jet pipe pushing away function it is characterised in that one end of described pressurized strut (2) with Hinge is passed through in one end of described main tie (4) and described subtie (5), and the axis of described bearing pin is turned with adjustment sheet (3) Axle is parallel.

3. according to claim 2 have the anti-jet pipe pushing away function it is characterised in that described main tie (4) includes two, It is located at the outside of described two blocks vertical side plates, the drive with the described pressurized strut (2) of homonymy respectively of each described main tie (4) respectively One end of moved end and described subtie (5) is hinged, and two described main ties (4) all with the described regulation positioned at same upper lateral part Piece (3) connects.

4. according to claim 3 have the anti-jet pipe pushing away function it is characterised in that described subtie (5) includes two, It is located at the outside of described two blocks vertical side plates, the drive with the described pressurized strut (2) of homonymy respectively of each described subtie (5) respectively One end of moved end and described main tie (4) is hinged, and two described subties (5) all with the described regulation positioned at same side lower part Piece (3) connects.