CN2698988Y

CN2698988Y - Minisize turbojet engine

Info

Publication number: CN2698988Y
Application number: CN 200420047576
Authority: CN
Inventors: 季承
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-05
Filing date: 2004-04-05
Publication date: 2005-05-11
Anticipated expiration: 2014-04-05

Abstract

The utility model discloses a miniature turbine jet engine, comprising an outer housing, bearings, a rotary shaft, a gas inlet outer stator, a gas inlet stator, a shaft sleeve, an end gas exhaust stator, a rectifying cover, a tail shaft nut, a gas exhaust stator, a gas exhaust blade wheel and a control device, and also comprising a front shaft nut, a large shaft sleeve and a burning chamber. The extending end of the front shaft and the extending end of the rear shaft of the rotary shaft are provided with outer threads, the extending end of the front shaft of the rotary shaft is screwed with a front shaft nut, and the rotary shaft is provided with backward the air inlet blade wheel, the shaft sleeve, a pair of supporting bearings, the shaft sleeve and the gas exhaust blade wheel. The extending end of the rear shaft is screwed with the tail shaft nut, and the gas inlet blade wheel and the gas exhaust blade wheel are fixedly connected with the rotary shaft. Adopting the design scheme, the miniature turbine jet engine improves the driving force of the engine of an aircraft model and the flying performance of the aircraft model, and widens the important function of the aircraft model in the modern war, military exercise and improving military exercise skill.

Description

Miniature turbine jet engines

Technical field

The utility model relates to a kind of air breathing engine of miniature usefulness, particularly relates to a kind of miniature turbine jet engines.

Background technique

Tiny engine in the prior art in the aviation model plane mostly is the tiny engine that cooperates propeller cavitation to use, because tiny engine performance defect in the prior art has influenced the development of model plane aspect all multipurposes.

Summary of the invention

The purpose of this utility model provides a kind of miniature turbine jet engines, to remedy the deficiencies in the prior art.

The utility model is realized as follows: a kind of miniature turbine jet engines, it includes shell, bearing, rotating shaft, the air inlet external stator, the air inlet stator, axle sleeve, the tail exhaust stator, cowling, tail shaft nuts, control gear, it also includes preceding spindle nut, the air inlet impeller, large shaft sleeve, the firing chamber, exhaust stator, exhaust impeller, the preceding shaft extension end of described rotating shaft and back shaft extension end are provided with outside thread, on the outside thread of the preceding shaft extension end of rotating shaft, be rotary with preceding spindle nut, and in rotating shaft, be disposed with the air inlet impeller backward, axle sleeve, a pair of spring bearing, axle sleeve, exhaust impeller, be rotary with tail shaft nuts on the outside thread of back shaft extension end, described air inlet impeller and exhaust impeller and rotating shaft are fixedly connected; Match with the outer shroud of spring bearing in the rotating shaft respectively in two ends in the described large shaft sleeve, and described air inlet stator suit is fixed on the large shaft sleeve front outer, and described exhaust stator suit is fixed on the outer rim of large shaft sleeve rear end; Described firing chamber is the tubbiness of annular, is provided with the ring jet mouth in backward directions, and the firing chamber is arranged between air inlet stator and the exhaust stator, and the ring jet mouth on the firing chamber is fixed on the exhaust stator; Described shell is that tubbiness is sleeved on air inlet stator and the exhaust stator, and fixes with it, is provided with the air inlet external stator in the inside of shell front end, and described air inlet external stator is connected mutually with shell and air inlet stator respectively.

Also be provided with starting electrical machinery and the startup clutch that is contained in the starting electrical machinery in the place ahead of preceding spindle nut, and itself and air inlet external stator be connected as a single entity by equally distributed 3 supporting frames.

The outer wall of combustion chamber of described tubbiness is provided with inlet hole, is provided with several atomizing nozzles that are circularly and evenly distributed in the firing chamber, is provided with spray bar in described atomizing nozzle, is provided with igniter in the firing chamber.

Be set with spring in the described rotating shaft, the rear end of described spring is pressed on the large shaft sleeve, and the front end of spring is pressed on the outer shroud of fore bearing inboard.

Described bearing is a ceramic bearing, is provided with two annular grooves on the large shaft sleeve of the position that contacts with the fore bearing outer shroud, is respectively equipped with seal ring in this groove.

When miniature turbine jet engines is worked, by control gear starting electrical machinery is rotated, clutch combines with the front end of preceding spindle nut under rotary action, drive rotating shaft and air inlet wheel rotation, after air compression, guiding through the air inlet stator vane enters the firing chamber, this moment, spray bar sprayed into kerosene in the atomizing nozzle, the atomizing kerosene of ejection at a high speed in the atomizing nozzle, after the further secondary-atomizing of atomizing kerosene that strikes firing chamber bottom returns, lighted the back by igniter and produce deflagration phenomenon, the air communication of High Temperature High Pressure is crossed the effect of exhaust stator, a part sprays generation thrust backward backward through the tail exhaust stator, another part acts on the exhaust impeller and to drive rotating shaft and be rotated further, under high-temperature high-pressure air flow drives the air inlet impeller can continuous firing after, starting electrical machinery quits work, clutch and preceding spindle nut break away from, and starting electrical machinery is finished the startup back work of motor.

Under the air inlet wheel rotation, after air compression, guiding through the air inlet stator vane constantly enters the firing chamber, this moment, spray bar sprayed into kerosene in the atomizing nozzle, the atomizing kerosene of ejection at a high speed in the atomizing nozzle produces continuous deflagration phenomenon, the constantly air communication of the High Temperature High Pressure of the generation effect of crossing exhaust stator, produce continuous thrust backward and the Driving force of impelling rotatingshaft to rotate, thereby make motor enter stable working state.

The utility model miniature turbine jet engines good effect is: owing to adopted present design, improved the engine model Driving force, improve the performance of model plane flights greatly, expanded model plane its important effect of performance on the military rehearsal of modern war, military exercises and raising technical ability.

Description of drawings

Fig. 1 is a sectional structure schematic representation of the present utility model.

Fig. 2 is the front elevation of firing chamber of the present utility model.

Fig. 3 is the sectional structure schematic representation of Fig. 2.

Among the figure, spindle nut, 4 shells, 5 air inlet external stators, 6 air inlet impellers, 7 air inlet stators, 8 bearings, 9 igniters, 10 fuel chamber, 11 inlet holes, 12 spray bars, 13 exhaust stator, 14 exhaust impellers, 15 tail exhaust stator, 16 tail shaft nuts, 17 cowlings, 18 axle sleeves, 19 large shaft sleeves, 20 atomizing nozzles, 21 rotating shafts, 22 springs, 23 seal rings, 24 start clutch, 25 ring jet mouths before 1 starting electrical machinery, 2 supporting frames, 3.

Below in conjunction with accompanying drawing the utility model is described further.

Embodiment

As shown in the figure, the miniature turbine jet engines that the utility model relates to, it includes shell 4, bearing 8, rotating shaft 21, air inlet external stator 5, air inlet stator 7, axle sleeve 18, tail exhaust stator 15, cowling 17, tail shaft nuts 16, control gear, it also includes preceding spindle nut 3, air inlet impeller 6, large shaft sleeve 19, firing chamber 10, exhaust stator 13, exhaust impeller 14, the preceding shaft extension end of described rotating shaft 21 and back shaft extension end are provided with outside thread, spindle nut 3 before on the outside thread of the preceding shaft extension end of rotating shaft 21, being rotary with, and in rotating shaft 21, be disposed with air inlet impeller 6 backward, axle sleeve 18, a pair of spring bearing 8, axle sleeve 18, exhaust impeller 14, be rotary with tail shaft nuts 16 on the outside thread of back shaft extension end, described air inlet impeller 6 and exhaust impeller 14 are fixedly connected with rotating shaft 21; In the described large shaft sleeve 19 match with the outer shroud of spring bearing 8 in the rotating shaft 21 respectively in two ends, and described air inlet stator 7 suits are fixed on large shaft sleeve 19 front outers, and described exhaust stator 13 suits are fixed on the large shaft sleeve 19 rear end outer rims; Described firing chamber 10 is the tubbiness of annular, is provided with ring jet mouth 25 in backward directions, and firing chamber 10 is arranged between air inlet stator 7 and the exhaust stator 13, and the ring jet mouth 25 on the firing chamber 10 is fixed on the exhaust stator 13; Described shell 4 is sleeved on air inlet stator 7 and the exhaust stator 13 for tubbiness, and fixes with it, is provided with air inlet external stator 5 in the inside of shell 4 front ends, and described air inlet external stator 5 is connected mutually with shell 4 and air inlet stator 7 respectively.

Also be provided with starting electrical machinery 1 and the startup clutch 24 that is contained in the starting electrical machinery 1 in the place ahead of preceding spindle nut 3, and itself and air inlet external stator 5 be connected as a single entity by equally distributed 3 supporting frames 2.

Firing chamber 10 outer walls of described tubbiness are provided with inlet hole 11, are provided with several atomizing nozzles 20 that are circularly and evenly distributed in firing chamber 10, are provided with spray bar 12 in described atomizing nozzle 20, are provided with igniter 9 in firing chamber 10.

Be set with spring 22 in the described rotating shaft 21, the rear end of described spring 22 is pressed on the large shaft sleeve 19, and the front end of spring 22 is pressed on the outer shroud of fore bearing 8 inboards.

Described bearing 8 is a ceramic bearing, is provided with two annular grooves on the large shaft sleeve 19 of the position that contacts with the fore bearing outer shroud, is respectively equipped with seal ring 23 in this groove.

The quantity of atomizing nozzle can increase and decrease its number according to the difference of designing requirement in the utility model miniature turbine jet engines firing chamber, has adopted the design proposal that 12 atomizing nozzles are set among the embodiment of the present utility model.

Claims

1. miniature turbine jet engines, it includes shell, bearing, rotating shaft, the air inlet external stator, the air inlet stator, axle sleeve, the tail exhaust stator, cowling, tail shaft nuts, exhaust stator, exhaust impeller, control gear, it is characterized in that: it also includes preceding spindle nut, large shaft sleeve, the firing chamber, the preceding shaft extension end of described rotating shaft and back shaft extension end are provided with outside thread, on the outside thread of the preceding shaft extension end of rotating shaft, be rotary with preceding spindle nut, and in rotating shaft, be disposed with the air inlet impeller backward, axle sleeve, a pair of spring bearing, axle sleeve, exhaust impeller, be rotary with tail shaft nuts on the outside thread of back shaft extension end, described air inlet impeller and exhaust impeller and rotating shaft are fixedly connected; Match with the outer shroud of spring bearing in the rotating shaft respectively in two ends in the described large shaft sleeve, and described air inlet stator suit is fixed on the large shaft sleeve front outer, and described exhaust stator suit is fixed on the outer rim of large shaft sleeve rear end; Described firing chamber is the tubbiness of annular, is provided with the ring jet mouth in backward directions, and the firing chamber is arranged between air inlet stator and the exhaust stator, and the ring jet mouth on the firing chamber is fixed on the exhaust stator; Described shell is that tubbiness is sleeved on air inlet stator and the exhaust stator, and fixes with it, is provided with the air inlet external stator in the inside of shell front end, and described air inlet external stator is connected mutually with shell and air inlet stator respectively.

2. miniature turbine jet engines according to claim 1, it is characterized in that: also be provided with starting electrical machinery and the startup clutch that is contained in the starting electrical machinery in the place ahead of preceding spindle nut, and itself and air inlet external stator be connected as a single entity by equally distributed 3 supporting frames.

3. miniature turbine jet engines according to claim 1 and 2, it is characterized in that: the outer wall of combustion chamber of described tubbiness is provided with inlet hole, in the firing chamber, be provided with several atomizing nozzles that are circularly and evenly distributed, in described atomizing nozzle, be provided with spray bar, in the firing chamber, be provided with igniter.

4. miniature turbine jet engines according to claim 1 and 2 is characterized in that: be set with spring in the described rotating shaft, the rear end of described spring is pressed on the large shaft sleeve, and the front end of spring is pressed on the outer shroud of fore bearing inboard.

5. miniature turbine jet engines according to claim 1 and 2 is characterized in that: described bearing is a ceramic bearing, is provided with two annular grooves on the large shaft sleeve of the position that contacts with the fore bearing outer shroud, is respectively equipped with seal ring in this groove.