Engine exhaust nozzle for aerospace machine

Abstract

The utility model discloses an engine exhaust nozzle for an aerospace machine. The engine exhaust nozzle comprises an engine shell; the fixed disc is fixedly arranged on one side of the engine shell; the tail spraying cylinder is connected with the inner cavity of the fixing disc in a matched and inserted mode; the tail spraying pipe is fixedly arranged on one side of the tail spraying cylinder and is communicated with an inner cavity of the tail spraying cylinder; the sound insulation protective cover is arranged on the outer side of the fixed disc; the adjusting mechanism is arranged on one side of the fixed disc; and the dismounting and fixing mechanism is arranged between the sound insulation protective cover and the fixing disc. According to the engine exhaust nozzle for the aerospace machine, by arranging the adjusting mechanism, the position of the support can be pulled so as to drive the exhaust nozzle to deflect up and down around the exhaust nozzle barrel, and therefore the direction of jet flow can be changed, the thrust adjusting capacity, the flight efficiency and the maneuverability of the aerospace machine can be improved, and the performance and flexibility of an aircraft can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation engines, in particular to an engine tail nozzle for aviation and aerospace aircraft. Background Art

[0002] The tail nozzle is one of the components of the turbojet engine of a jet aircraft. Its main function is to eject the products of jet aircraft fuel combustion, such as carbon dioxide, sulfur dioxide, carbon monoxide, nitrogen oxides and incompletely burned small molecular hydrocarbons, to exhaust exhaust gas. It also uses the reaction force generated by the air during the injection to propel the aircraft. However, in a turboprop engine, the thrust provided by the tail nozzle is only a part of the aircraft's power. The main power of the aircraft is provided by the driving propeller of the turboprop engine.

[0003] At present, the jet direction of the tail nozzle of an aerospace aircraft is fixed, which will consume more fuel in certain flight phases. The direction of the jet flow cannot be adjusted as needed, which will increase resistance and thus reduce fuel efficiency. The tail nozzle produces a loud noise when working, which will interfere with the surrounding environment and personnel. Utility Model Content

[0004] The utility model aims to provide an engine tail nozzle for an aerospace aircraft, so as to solve the problems in the prior art that the tail nozzle cannot adjust the direction of the jet flow as needed, which will increase the resistance and thus reduce the fuel efficiency, and the tail nozzle generates a huge noise when working, which will cause interference to the surrounding environment and personnel.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an engine tail nozzle for an aerospace aircraft, comprising:

[0006] Engine casing;

[0007] A fixing plate, fixedly arranged on one side of the engine housing;

[0008] A tail nozzle adapted to be plugged into the inner cavity of the fixed plate;

[0009] A tail nozzle, fixedly arranged on one side of the tail nozzle and communicated with the inner cavity of the tail nozzle;

[0010] A soundproof protective cover, arranged on the outer side of the fixing plate;

[0011] An adjustment mechanism is arranged on one side of the fixed plate;

[0012] The disassembly fixing mechanism is arranged between the sound insulation protective cover and the fixing plate.

[0013] Preferably, the tail nozzle is spherical in shape, and the tail nozzle rotates in the fixed disk.

[0014] Preferably, the adjustment mechanism includes: a hydraulic cylinder embedded in one side of the fixed plate; a bracket, on which brackets are fixedly arranged on both the front and rear sides of the top end of the outer wall of the tail nozzle; a plug column, on the inner side of the bracket, strip holes are opened in the up and down directions, and the inner cavity of the strip hole is plugged with a plug column; a push rod, fixedly arranged at one end of the hydraulic cylinder, and the other end of the push rod is fixedly connected to one side of the outer wall of the plug column.

[0015] Preferably, the push rod is in a "Z" shape.

[0016] Preferably, the plug post is adapted to be plugged into the middle portion of the inner cavity of the strip-shaped hole.

[0017] Preferably, the disassembly and fixing mechanism includes: limiting columns, the number of the sound insulation protective cover is two, a plurality of limiting columns are fixedly arranged on the inner side of the sound insulation protective cover, a plurality of limiting grooves are provided on the upper and lower sides of the fixed plate, and the limiting columns are adapted to be plugged into the inner cavity of the limiting grooves; a card edge, a card groove is provided at the bottom end of the sound insulation protective cover on the lower side, and a card edge is provided at the top end of the sound insulation protective cover on the upper side, and the card edge is adapted to be plugged into the inner cavity of the card groove; bolts, a plurality of bolts are threadedly connected to the front side of the sound insulation protective cover, and the bolts are locked to the front side of the card edge.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows: the tail nozzle of the engine for an aerospace aircraft can pull the position of the bracket by providing an adjustment mechanism to drive the tail nozzle to deflect up and down around the tail nozzle tube, thereby changing the direction of the jet flow, improving the thrust adjustment capability, flight efficiency and maneuverability of the aerospace aircraft, thereby increasing the performance and flexibility of the aircraft, and by providing a disassembly and fixing mechanism, the sound insulation protective cover can be fixed to the outside of the fixing plate, and the fixation is firm, the installation and disassembly are convenient, and the replacement and maintenance are convenient to reduce noise interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a front cross-sectional view of the utility model;

[0021] Figure 3 This is a schematic diagram of the assembly structure of the bracket of the utility model;

[0022] Figure 4 It is a schematic diagram of the assembly structure of the sound insulation protective cover of the utility model.

[0023] In the figure: 1. engine casing, 2. fixing plate, 3. tail nozzle, 4. tail nozzle, 5. sound insulation protective cover, 6. adjustment mechanism, 61. hydraulic cylinder, 62. bracket, 63. plug column, 64. strip hole, 65. push rod, 7. disassembly and fixing mechanism, 71. limit column, 72. limit groove, 73. clamping edge, 74. clamping groove, 75. bolt. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 The utility model provides a technical solution: an engine tail nozzle for an aerospace machine, comprising: an engine casing 1, a fixing plate 2, a tail nozzle 3, a tail nozzle 4, a sound insulation protective cover 5, an adjustment mechanism 6 and a disassembly and fixing mechanism 7;

[0026] The fixed plate 2 is fixedly set on one side of the engine casing 1, the tail nozzle 3 is adapted and plugged into the inner cavity of the fixed plate 2, the tail nozzle 3 can rotate in the fixed plate 2, the tail nozzle 4 is fixedly set on one side of the tail nozzle 3 and communicated with the inner cavity of the tail nozzle 3, the sound insulation protective cover 5 is set on the outside of the fixed plate 2, the adjustment mechanism 6 is set on one side of the fixed plate 2, and the disassembly and fixing mechanism 7 is set between the sound insulation protective cover 5 and the fixed plate 2.

[0027] As a preferred solution, further, the tail nozzle 3 is spherical in shape, and the tail nozzle 3 rotates in the fixed disk 2, and the tail nozzle 3 cannot be separated from the fixed disk 2, so that the direction of the spray pipe 4 can be adjusted.

[0028] As a preferred solution, further, the adjustment mechanism 6 includes: a hydraulic cylinder 61, a bracket 62, a plug column 63, a strip hole 64 and a push rod 65;

[0029] In order to control the direction of the tail nozzle 4, the hydraulic cylinder 61 is embedded in one side of the fixed plate 2, and brackets 62 are fixedly arranged on both sides of the front and rear ends of the top of the outer wall of the tail nozzle 4. The inner side of the bracket 62 is provided with a strip hole 64 in the up and down directions. The inner cavity of the strip hole 64 is inserted with a plug column 63, and the plug column 63 can move up and down in the strip hole 64. The push rod 65 is fixedly arranged at one end of the hydraulic cylinder 61, and the other end of the push rod 65 is fixedly connected to one side of the outer wall of the plug column 63. The hydraulic cylinder 61 can push the push rod 65 to move, and the push rod 65 can drive the plug column 63 to push the inner wall of the strip hole 64, so that the bracket 62 drives the tail nozzle 4 to rotate around the tail nozzle tube 3.

[0030] As a preferred solution, further, the push rod 65 is shaped like a "Z" so that the bracket 62 can be moved through the plug post 63 to reduce the lever arm.

[0031] As a preferred solution, further, the plug post 63 is adapted to be plugged into the middle of the inner cavity of the strip hole 64, so that the plug post 63 has enough space to move when the plug post 63 pushes the inner wall of the strip hole 64 to the left or right.

[0032] As a preferred solution, further, the disassembly and fixing mechanism 7 includes: a limiting column 71, a limiting groove 72, a clamping edge 73, a clamping groove 74 and a bolt 75;

[0033] In order to facilitate the installation and disassembly of the sound insulation protective cover 5, the number of the sound insulation protective cover 5 is two, and a plurality of limiting columns 71 are fixedly provided on the inner side of the sound insulation protective cover 5, and a plurality of limiting grooves 72 are provided on the upper and lower sides of the fixed plate 2, and the limiting columns 71 are adapted to be plugged into the inner cavity of the limiting grooves 72, and the upper and lower sound insulation protective covers 5 can be docked through the cooperation of the limiting columns 71 and the limiting grooves 72, and a card slot 74 is provided at the bottom end of the lower sound insulation protective cover 5, and a card edge 73 is provided at the top end of the upper sound insulation protective cover 5, and the card edge 73 is adapted to be plugged into the inner cavity of the card slot 74, and the card edge 73 and the card slot 74 can be provided with The card edge 73 and the card slot 74 can make the upper and lower sound insulation protective covers 5 fit tightly, and a plurality of bolts 75 are screwed on the front side of the sound insulation protective cover 5, and the bolts 75 are locked with the front side of the card edge 73, and the bolts 75 can lock and fix the sound insulation protective covers 5 on both sides.

[0034] The detailed connection means are well-known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0035] Step 1: Connect the external power supply of the hydraulic cylinder 61 to control the hydraulic cylinder 61 to start. After the hydraulic cylinder 61 pushes the push rod 65 to move to the right, the push rod 65 can drive the plug column 63 to push the inner wall of the strip hole 64, so that the bracket 62 drives the tail nozzle 4 to rotate downward around the tail nozzle tube 3. The hydraulic cylinder 61 pushes the push rod 65 to move to the left to drive the tail nozzle 4 to rotate upward, thereby changing the spraying direction of the tail nozzle 4, and then adjusting the thrust distribution of the aircraft, and changing the resistance distribution of the aircraft, so as to improve the flight efficiency of the aerospace aircraft;

[0036] Step 2: When disassembling and installing the sound insulation protective cover 5, turn the bolt 75 to release the fixation of the sound insulation protective cover 5, and separate the upper and lower sides of the sound insulation protective cover 5 so that the clamping edge 73 is disengaged from the clamping groove 74, and the limiting column 71 is disengaged from the limiting groove 72, thereby opening the sound insulation protective cover 5 for easy disassembly. During installation, the sound insulation protective cover 5 can be stably fixed on the outside of the fixed plate 2 through the cooperation of the limiting column 71 and the limiting groove 72, the clamping edge and the clamping groove 74, which is firmly fixed and easy to maintain.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An engine tail nozzle for an aerospace aircraft, characterized in that: include: Engine housing (1); A fixing plate (2) fixedly arranged on one side of the engine casing (1); A tail nozzle (3) is adapted to be plugged into the inner cavity of the fixing plate (2); A tail nozzle (4) is fixedly arranged on one side of the tail nozzle barrel (3) and communicates with the inner cavity of the tail nozzle barrel (3); A soundproof protective cover (5) is arranged on the outer side of the fixing plate (2); An adjustment mechanism (6) is arranged on one side of the fixed plate (2); The disassembly fixing mechanism (7) is arranged between the sound insulation protective cover (5) and the fixing plate (2).

2. The tail nozzle of an aerospace engine according to claim 1, characterized in that: The tail nozzle (3) is spherical in shape, and the tail nozzle (3) rotates inside the fixed disk (2).

3. The tail nozzle of an aerospace engine according to claim 1, characterized in that: The regulating mechanism (6) comprises: A hydraulic cylinder (61) embedded in one side of the fixed plate (2); A bracket (62), wherein the bracket (62) is fixedly arranged on both the front and rear sides of the top end of the outer wall of the tail nozzle (4); Insertion column (63), the inner side of the bracket (62) is provided with a strip hole (64) in the up-down direction, and the inner cavity of the strip hole (64) is inserted with the insertion column (63); A push rod (65) is fixedly arranged at one end of the hydraulic cylinder (61), and the other end of the push rod (65) is fixedly connected to one side of the outer wall of the plug column (63).

4. The tail nozzle of an aerospace engine according to claim 3, characterized in that: The push rod (65) is in a "Z" shape.

5. The tail nozzle of an aerospace engine according to claim 3, characterized in that: The plug post (63) is adapted to be plugged into the middle portion of the inner cavity of the strip-shaped hole (64).

6. The tail nozzle of an aerospace engine according to claim 1, characterized in that: The disassembly and fixing mechanism (7) comprises: Limiting columns (71), the number of the sound insulation protective cover (5) is two, a plurality of limiting columns (71) are fixedly arranged on the inner side of the sound insulation protective cover (5), a plurality of limiting grooves (72) are provided on both the upper and lower sides of the fixed plate (2), and the limiting columns (71) are adapted to be plugged into the inner cavities of the limiting grooves (72); A card edge (73), a card slot (74) is provided at the bottom end of the sound insulation protective cover (5) located at the lower side, and a card edge (73) is provided at the top end of the sound insulation protective cover (5) located at the upper side, and the card edge (73) is adapted to be plugged into the inner cavity of the card slot (74); Bolts (75), a plurality of bolts (75) are threadedly connected to the front side of the sound insulation protective cover (5), and the bolts (75) are locked with the front side of the clamping edge (73).

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